The act of having sexual intercourse with a girl doggy style (vaginal or anal), pulling out before orgasm and ejaculating all over her back and arse. At which point you would give the girl a massage using said semen as a massage oil substitute. The end result should give the girls spooge ridden body the desired resemblance of a glazed ham.

Man! thats the last time i forget to bring baby oil, I ended up having to give that girl a Glazed Ham.

When a guy is having sex with their partner from the rear. Before ejaculation they pull out and cum all over the persons ass cheeks and then spread it all around with their hand. Creating a shiny "Glazed Ham"